let P be Instruction-Sequence of SCM+FSA; for s being State of SCM+FSA
for I being good Program of SCM+FSA st I is_closed_on s,P holds
for k being Element of NAT holds (Comput ((P +* I),(Initialize s),k)) . (intloc 0) = s . (intloc 0)
let s be State of SCM+FSA; for I being good Program of SCM+FSA st I is_closed_on s,P holds
for k being Element of NAT holds (Comput ((P +* I),(Initialize s),k)) . (intloc 0) = s . (intloc 0)
let I be good Program of SCM+FSA; ( I is_closed_on s,P implies for k being Element of NAT holds (Comput ((P +* I),(Initialize s),k)) . (intloc 0) = s . (intloc 0) )
assume A1:
I is_closed_on s,P
; for k being Element of NAT holds (Comput ((P +* I),(Initialize s),k)) . (intloc 0) = s . (intloc 0)
let k be Element of NAT ; (Comput ((P +* I),(Initialize s),k)) . (intloc 0) = s . (intloc 0)
not I destroys intloc 0
by SCMFSA7B:def 5;
hence
(Comput ((P +* I),(Initialize s),k)) . (intloc 0) = s . (intloc 0)
by A1, SCMFSA7B:21; verum